https://www.youtube.com/watch?v=iRmeJZHcFYY is a video demo of using UNmodded Valheim with VorpX. https://www.vorpx.com/ is the link, and there are many *MANY* other non-VR games that can be made VR with VorpX. This may be your only answer if you wish to play on an UNmodded server with your friends, but as options go this is a fine one. :)